Double-layer switch cabinet and use method thereof

Abstract

The invention discloses a double-layer switch cabinet and a using method thereof. The double-layer switch cabinet comprises a cabinet body, a first handcart device, a second handcart device, a supporting moving device, a cabinet body separating device and a guiding locking device. A first cable chamber, a second cable chamber, a bus chamber, a first handcart chamber and a second handcart chamber are arranged in the cabinet body; the supporting and moving device comprises a supporting side plate, a first supporting mechanism, a second supporting mechanism and a hinged folding connecting rod mechanism. The using method of the double-layer switch cabinet comprises the steps that the second supporting mechanism is pushed in the horizontal direction, so that the hinged folding connecting rod mechanism obliquely and downwards turns over and moves in the direction away from the cabinet body with the hinged position of the hinged folding connecting rod mechanism and the supporting side plate as a rotating shaft; the second supporting mechanism synchronously moves to the position close to and flush with the first supporting mechanism in the horizontal direction and the vertical direction in the horizontal state; a transfer trolley is not needed, the overhaul and maintenance efficiency is improved, and meanwhile the workload and the safety risk of operators are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of power distribution cabinet equipment, and in particular to a double-layer switch cabinet and a method for using the same. Background Art

[0002] The traditional high-voltage switch cabinet trolley-type circuit breaker maintenance operation requires the trolley circuit breaker to be pulled out of the switch cabinet and transported with the help of a transfer trolley. Manual operation requires adjusting the height adjustment device of the transfer trolley to ensure that the tray is aligned with the circuit breaker trolley chamber, and the circuit breaker is inspected and replaced by manual positioning; however, the existing high-voltage switch cabinet maintenance and replacement has the disadvantages of large workload and cumbersome operation, and is prone to safety risks such as bumps and smashes during transportation; especially in the application of double-layer high-voltage switch cabinets, the maintenance of the circuit breakers on the upper and lower layers is more difficult. Due to the heavy weight of the circuit breaker and the trolley, the operator's burden is increased during transportation and alignment. Especially when a large number of circuit breakers need to be inspected, the operation process is complicated, requiring the cooperation of multiple people and frequent tool changes, resulting in low operation efficiency and a large safety hazard. Summary of the invention

[0003] In order to improve the defects that the maintenance and replacement process of circuit breaker trolleys in double-layer high-voltage switchgear is complicated, requires the cooperation of multiple people, and has low operating efficiency, the present application provides a double-layer switchgear and a method for using the same.

[0004] The present application provides a double-layer switch cabinet and a method for using the same, which adopts the following technical solutions: A double-layer switch cabinet, comprising a cabinet, a first trolley device movably inserted in the cabinet, a second trolley device movably inserted in the cabinet and located above the first trolley device, a supporting and moving device for supporting the first trolley device and the second trolley device respectively, a cabinet partition device inserted in the cabinet, and a guide lock device provided between the cabinet and the supporting and moving device and used to connect the cabinet and the supporting and moving device; the supporting and moving device is used to move along the direction of inserting or withdrawing the cabinet; The cabinet is provided with a first cable chamber located at the bottom of one side of the cabinet partition device, a second cable chamber located above the first cable chamber, a busbar chamber located above the second cable chamber, a first trolley chamber located at the bottom of the other side of the cabinet partition device and used for inserting the first trolley device, and a second trolley chamber located above the first trolley chamber and used for inserting the second trolley device; The supporting and moving device includes a supporting side panel movably inserted in the first trolley chamber, a first supporting mechanism fixedly connected to the supporting side panel and used to support the first trolley device, a second supporting mechanism movably connected to the supporting side panel and used to support the second trolley device, and an articulated folding connecting rod mechanism hinged to the supporting side panel and connected to the second supporting mechanism; the articulated folding connecting rod mechanism is used to fold and move obliquely downward in a direction away from the cabinet body with the hinge position with the supporting side panel as the rotation axis, so that the second supporting mechanism moves in a horizontal state to a position close to the first supporting mechanism.

[0005] By adopting the above technical solution, the supporting side plate of the supporting moving device is movably inserted into the first trolley chamber, the supporting side plate is fixedly connected to the first supporting mechanism, and the first supporting mechanism is used to support the first trolley device; the supporting side plate is movably connected to the second supporting mechanism, and the second supporting mechanism is used to support the second trolley device; the lower end of the articulated folding link mechanism is articulated to the supporting side plate, and the upper end of the articulated folding link mechanism is connected to the second supporting mechanism, and the articulated folding link mechanism is used for flipping and folding; the articulated folding link mechanism uses the hinge point with the supporting side plate as the rotation axis, and folds downward in the direction away from the cabinet body, so that the second supporting mechanism moves to a position close to being flush with the first supporting mechanism; The first support mechanism of the present application can realize the insertion and withdrawal operations of the first trolley device, and the articulated folding connecting rod mechanism can enable the second support mechanism to drive the second trolley device to move up and down in the direction away from the cabinet, without the need for a transfer trolley, effectively reducing the space occupied by the equipment, improving the efficiency of inspection and maintenance, and reducing the workload and safety risks of operators.

[0006] Preferably, the articulated folding link mechanism includes a horizontal support rod fixedly connected to the side wall of the second support mechanism, a first vertical support rod hinged to the side wall of the support side panel and the front end of the horizontal support rod, a second vertical support rod hinged to the side wall of the support side panel and the rear end of the horizontal support rod, and an elastic connection component hinged to the side wall of the support side panel and the second support mechanism.

[0007] By adopting the above technical solution, the articulated folding connecting rod mechanism uses the hinge point of the supporting side panel as the axis to realize the up and down folding of the horizontal support rod. When moving in the direction away from the cabinet, the second support mechanism will move downward in a horizontal state under the action of the elastic connection component until it is close to the position flush with the first support mechanism, which is convenient for simultaneous maintenance or replacement of the first trolley device and the second trolley device, and also convenient for separate maintenance and replacement of the upper second trolley device without moving the first trolley device. This design allows the second support mechanism to be flexibly adjusted at different heights, improves the convenience and safety of operation, reduces the labor intensity of operators and reduces the risk of errors.

[0008] Preferably, the articulated folding connecting rod mechanism also includes a support rod locking assembly hinged to the side wall of the supporting side panel at one end, and a limiting protrusion connected to the first vertical support rod; the other end of the support rod locking assembly is provided with a limiting plug hole for inserting the limiting protrusion.

[0009] By adopting the above technical scheme, when the articulated folding link mechanism is in the unfolded state, the support rod locking assembly is rotated with the hinged position between the support rod locking assembly and the side wall of the support side plate as the rotation axis, so that the limiting convex edge is inserted into the limiting plug-in hole to limit the relative movement between the first vertical support rod and the support side plate, providing a stable locking function, preventing the movement and folding of the articulated folding link mechanism, and ensuring that the second support mechanism stably supports the second trolley device; this design realizes the locking and unlocking of the articulated folding link mechanism through the cooperation of the support rod locking assembly and the limiting convex edge, further improving the stability and safety of the supporting mobile device, reducing manual operation, and improving work efficiency.

[0010] Preferably, the first supporting mechanism and the second supporting mechanism both include a supporting plate body and a trolley slide rail provided on the supporting plate body; The first trolley device and the second trolley device both include a movable trolley assembly slidably connected to the trolley slide rail, and a vacuum contactor disposed on the movable trolley assembly.

[0011] By adopting the above technical solution, when the supporting mobile device is pulled out of the cabinet, the first trolley device and the second trolley device can separate from the first cable chamber, and from the second trolley device to the second cable chamber through the sliding of the mobile trolley assembly on the trolley slide rail, so as to facilitate maintenance or replacement; the design realizes the convenient movement and positioning of the first trolley device and the second trolley device through the cooperation of the trolley slide rail and the mobile trolley assembly, so that the movement of the first trolley device and the second trolley device is smoother, and the trolley slide rail provides precise guidance to ensure that the mobile trolley assembly can accurately reach the designated position, thereby improving the efficiency and safety of maintenance operations.

[0012] Preferably, the support plate body is provided with a guide block receiving groove opening in a direction away from the cabinet body, and the second support mechanism also includes a guide inclined slider movably inserted in the guide block receiving groove and used to be pulled out to support and guide the movement of the mobile trolley assembly.

[0013] By adopting the above technical scheme, when the second supporting mechanism moves to a position close to being flush with the first supporting mechanism, the guiding inclined slider is pulled out from the guiding block receiving groove, and the inclined surface of the guiding inclined slider provides support and guidance for the mobile trolley assembly, thereby ensuring that the mobile trolley assembly is smoothly moved out from the second supporting mechanism, so as to facilitate the simultaneous maintenance or replacement of the first trolley device and the second trolley device; when the supporting mobile device is inserted into the cabinet, the guiding inclined slider is retracted into the guiding block receiving groove, without affecting the normal operation of the first trolley device and the second trolley device; this design realizes precise support and guidance for the movement of the second trolley device through the cooperation of the guiding block receiving groove and the guiding inclined slider, thereby improving the efficiency and safety of the maintenance operation, and at the same time does not affect the normal operation of the first trolley device and the second trolley device in the cabinet.

[0014] Preferably, the first supporting mechanism further comprises a movable roller connected to the bottom of the supporting plate body.

[0015] By adopting the above-mentioned technical scheme, the movable roller is used to support and move the entire supporting movable device; when the supporting movable device needs to be pulled out or inserted into the cabinet, the movable roller rolls on the ground and inside the cabinet, reducing friction and making the movement of the supporting movable device smoother and more labor-saving; the setting of the movable roller makes the positioning of the supporting movable device inside the cabinet more flexible, which is convenient for maintenance work; the present application further improves the mobility and positioning flexibility of the supporting movable device through the setting of the movable roller, reduces the burden of manual operation, and improves the efficiency and safety of maintenance work.

[0016] Preferably, the guide locking device includes a guide rail arranged on the inner wall of the cabinet, a horizontal sliding mechanism arranged on the outer wall of the supporting side panel and used to be movably inserted in the guide rail along the horizontal direction, a limit locking mechanism connected to the guide rail and used to be movably plugged into and cooperate with the horizontal sliding mechanism along the vertical direction, and an unlocking mechanism movably inserted on the horizontal sliding mechanism and extending to the position of the limit locking mechanism; the guide rail is provided with a convex guide groove arranged along the horizontal direction and used for the horizontal sliding mechanism to be inserted.

[0017] By adopting the above technical scheme, the horizontal sliding mechanism is located on the outer wall of the supporting side panel and can move horizontally along the sliding groove in the guide slide rail; the limit locking mechanism is connected to the guide slide rail and is movably plugged in with the horizontal sliding mechanism in the vertical direction to play a locking and limiting role, ensuring that the horizontal sliding mechanism remains stable after reaching the specified position; the unlocking mechanism is arranged on the horizontal sliding mechanism and extends to the plug-in position of the limit locking mechanism. The locking state of the limit locking mechanism is released by the unlocking operation, thereby allowing the horizontal sliding mechanism to be pulled out; the design of the entire guide locking device ensures the smooth movement of the supporting mobile device in the cabinet, the guide slide rail ensures the accuracy of the horizontal movement, the limit locking mechanism provides a locking function to prevent the supporting mobile device from accidentally shifting or loosening during the movement, and the unlocking mechanism makes the operation more convenient and safe; the present application not only improves the accuracy of the movement and alignment of the supporting mobile device and reduces the complexity of manual intervention, but also improves the safety of operation through an effective locking and unlocking mechanism, ensuring the safety of operators in a high-pressure environment.

[0018] Preferably, the limit locking mechanism comprises an insertion limit seat connected to the guide slide rail, a limit plug rod provided on the insertion limit seat and movably inserted in the guide slide rail along the vertical direction, a locking elastic component provided between the limit plug rod and the insertion limit seat and used for pressing the end of the limit plug rod, and an inclined sliding slope provided at the other end of the limit plug rod; the locking elastic component is used for pressing the limit plug rod so that the limit plug rod maintains a tendency to move downward; the horizontal sliding mechanism is provided with a limit locking slot opening upwardly for inserting the limit plug rod, and a sliding unlocking slope is provided in the limit locking slot for slidably pressing and cooperating with the lower end of the limit plug rod; When the horizontal sliding mechanism is horizontally inserted into the convex guide groove, the end of the horizontal sliding mechanism presses the inclined sliding slope, so that the limit plug rod moves up and compresses the locking elastic component; when the limit plug rod is aligned with the limit locking slot, the locking elastic component resets and pushes the limit plug rod to insert into the limit locking slot.

[0019] By adopting the above technical scheme, when the horizontal sliding mechanism is inserted into the guide slide groove in the horizontal direction, the end of the horizontal sliding mechanism presses against the inclined sliding slope, so that the limit plug-in rod moves up and compresses the locking elastic component; when the limit plug-in rod is aligned with the limit locking slot on the horizontal sliding mechanism, the locking elastic component is reset, pushing the limit plug-in rod to be inserted into the limit locking slot to achieve locking; the limit locking mechanism of the present application ensures that the limit plug-in rod can be accurately locked and maintained stable through the elastic reset of the locking elastic component. The present application provides a reliable locking mechanism, which ensures that the supporting mobile device can be accurately positioned and firmly locked with the cabinet during the movement, thereby improving the safety, stability and convenience of the operation of the supporting mobile device, reducing the complexity of manual adjustment, and avoiding the risk of accidental loosening or displacement.

[0020] Preferably, the horizontal sliding mechanism is provided with an unlocking hole arranged along the length direction of the horizontal sliding mechanism; The unlocking mechanism includes an unlocking rod movably inserted in the unlocking hole, and an unlocking return spring inserted in the unlocking hole and located between the unlocking rod and the horizontal sliding mechanism; the unlocking rod is provided with a locking plug-in groove aligned with the limit locking slot and used for inserting the lower end of the limit plug-in rod; the unlocking rod is provided with an unlocking inclined slope surface located in the locking plug-in groove and used for press-fitting with the inclined sliding slope surface, and a vertical limit side wall press-fitting with the side wall of the limit plug-in rod.

[0021] When the locking cam is in the unlocked position, the locking lever is engaged with the locking member and the locking member is engaged with the locking member, thereby releasing the locking member from the locking cam and releasing the locking member. The vertical limit side wall on the unlocking rod cooperates with the side wall of the limit plug-in rod to ensure that the limit plug-in rod remains stable when locked and does not shift horizontally; the unlocking reset spring resets the unlocking rod after the operation is completed to ensure that the system returns to its initial state; this design ensures that the locking and unlocking process when the supporting mobile device moves is safe and stable, and can effectively prevent accidental displacement. At the same time, through the precise cooperation of the unlocking mechanism, the operation steps are simplified and the operating efficiency and safety of the equipment are improved.

[0022] A method for using a double-layer switch cabinet, comprising the double-layer switch cabinet, and further comprising the following steps: S1: When assembling the first trolley device and the second trolley device, the first support mechanism and the second support mechanism are kept parallel, and the second support mechanism is pushed in the horizontal direction, so that the hinged folding link mechanism is folded and moved obliquely downward in a direction away from the cabinet body with the hinged position with the support side panel as the rotation axis, so that the second support mechanism is synchronously moved in the horizontal and vertical directions in a horizontal state to a position close to the first support mechanism. S2: moving the second trolley device onto the second supporting mechanism; S3: pushing the second supporting mechanism upwards to unfold the hinged folding link mechanism and move the second supporting mechanism to just above the first supporting mechanism; S4: moving the first trolley device onto the first supporting mechanism; S5: Pushing the supporting and moving device into the cabinet, so that the first trolley device is inserted into the first trolley chamber, and the second trolley device is inserted into the second trolley chamber; S6: The guide locking device fixes the relative position between the supporting moving device and the cabinet; S7: When disassembling and assembling the first trolley device and the second trolley device, the guide locking device is unlocked, and the supporting moving device is pulled out of the cabinet; S8: Remove the first trolley device from the first supporting mechanism, push the second supporting mechanism in the horizontal direction, so that the articulated folding link mechanism is folded and moved obliquely downward in the direction away from the cabinet with the hinge position of the supporting side panel as the rotation axis, so that the second supporting mechanism is moved synchronously in the horizontal and vertical directions in a horizontal state to a position nearly flush with the first supporting mechanism; remove the second trolley device from the second supporting mechanism.

[0023] By adopting the above technical scheme, with the hinged position of the hinged folding link mechanism and the supporting side plate as the rotation axis, the second supporting mechanism is pushed to fold obliquely downward, so that the second supporting mechanism is close to being flush with the first supporting mechanism, preparing for the installation of the second trolley device; then the second trolley device is moved onto the second supporting mechanism, and the second supporting mechanism is pushed upward to unfold the hinged folding link mechanism, and the second supporting mechanism is moved up to just above the first supporting mechanism; the first trolley device is moved onto the first supporting mechanism to complete the installation of the first trolley device and the second trolley device; the supporting movable device is pushed into the cabinet, so that the first trolley device is inserted into the first trolley chamber and the second trolley device is inserted into the second trolley chamber, and the relative position between the supporting movable device and the cabinet is fixed by the guide locking device; in the disassembly step, after unlocking the guide locking device, the supporting movable device is pulled out of the cabinet, and the second supporting mechanism is close to being flush with the first supporting mechanism again through the folding operation of the hinged folding link mechanism, thereby smoothly moving the first trolley device and the second trolley device out; The entire operation is carried out through the flexible folding and unfolding of the articulated folding link mechanism and the stable locking and unlocking of the supporting mobile device by the guide locking mechanism, making the installation and disassembly of the first cart device and the second cart device efficient and safe, reducing the burden on operators, improving work efficiency, and reducing safety hazards.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. A double-layer switch cabinet, wherein a supporting side plate of a supporting moving device is movably inserted into a first handcart chamber, the supporting side plate is fixedly connected to a first supporting mechanism, and the first supporting mechanism is used to support the first handcart device; the supporting side plate is movably connected to a second supporting mechanism, and the second supporting mechanism is used to support the second handcart device; the lower end of the hinged folding link mechanism is hinged to the supporting side plate, and the upper end of the hinged folding link mechanism is connected to the second supporting mechanism, and the hinged folding link mechanism is used to flip and fold; the hinged folding link mechanism uses the hinge point with the supporting side plate as the rotation axis, and folds downward in a direction away from the cabinet body, so that the second supporting mechanism moves to a position close to being flush with the first supporting mechanism; The first support mechanism of the present application can realize the insertion and extraction operation of the first trolley device, and the hinged folding connecting rod mechanism can enable the second support mechanism to drive the second trolley device to move up and down in the direction away from the cabinet, without the need for a transfer trolley, effectively reducing the space occupied by the equipment, improving the efficiency of inspection and maintenance, and reducing the workload and safety risks of operators; 2. A double-layer switch cabinet, wherein the unlocking mechanism and the horizontal sliding mechanism are movably connected by means of an unlocking hole, the unlocking rod is inserted into the unlocking hole, and the unlocking rod is stably reset by means of an unlocking reset spring; a locking slot is provided on the unlocking rod, the locking slot is aligned with the limit locking slot of the horizontal sliding mechanism, and the lower end of the limit plug rod is inserted therein, so as to realize the locking of the supporting moving device; The unlocking rod is also provided with an unlocking inclined slope, which cooperates with the inclined sliding slope on the limit plug rod. When the unlocking rod is pressed in the direction close to the cabinet, the unlocking inclined slope presses the inclined sliding slope, so that the limit plug rod moves up along the inclined sliding slope. When the bottom end of the limit plug rod moves into the limit locking slot, the supporting moving device is pulled in the direction away from the cabinet, so that the sliding unlocking slope presses the bottom end of the limit plug rod, and the limit plug rod continues to move up and is pulled out of the limit locking slot to release the lock. The vertical limit side wall on the unlocking rod cooperates with the side wall of the limit plug rod to ensure that the limit plug rod remains stable when locked and does not shift horizontally; the unlocking reset spring resets the unlocking rod after the operation is completed to ensure that the system returns to its initial state; this design ensures that the locking and unlocking process of the supporting mobile device is safe and stable when moving, and can effectively prevent accidental displacement. At the same time, the precise cooperation of the unlocking mechanism simplifies the operation steps and improves the operating efficiency and safety of the equipment; 3. A method for using a double-layer switch cabinet, taking the hinged position of the hinged folding link mechanism and the supporting side plate as the rotation axis, pushing the second support mechanism to fold obliquely downward, so that the second support mechanism is close to the first support mechanism, and preparing for the installation of the second trolley device; then moving the second trolley device onto the second support mechanism, and pushing the second support mechanism upward to unfold the hinged folding link mechanism, and the second support mechanism moves up to just above the first support mechanism; moving the first trolley device onto the first support mechanism to complete the installation of the first trolley device and the second trolley device; the supporting moving device is pushed into the cabinet, so that the first trolley device is inserted into the first trolley chamber, and the second trolley device is inserted into the second trolley chamber, and the relative position between the supporting moving device and the cabinet is fixed by the guide locking device; in the disassembly step, after unlocking the guide locking device, the supporting moving device is pulled out of the cabinet, and the second support mechanism is close to the first support mechanism again through the folding operation of the hinged folding link mechanism, so that the first trolley device and the second trolley device are smoothly moved out; The entire operation is carried out through the flexible folding and unfolding of the articulated folding link mechanism and the stable locking and unlocking of the supporting mobile device by the guide locking mechanism, making the installation and disassembly of the first cart device and the second cart device efficient and safe, reducing the burden on operators, improving work efficiency, and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the cross-sectional structure of a double-layer switch cabinet embodiment of the present application. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of a double-layer switch cabinet embodiment of the present application. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of a double-layer switch cabinet embodiment of the present application. Figure 3 .

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of a double-layer switch cabinet embodiment of the present application. Figure 4 .

[0029] Figure 5 for Figure 4 Enlarged view of part A.

[0030] Figure 6 It is a schematic diagram of the steps of an embodiment of a method for using a double-layer switch cabinet of the present application.

[0031] Description of reference numerals: 1. Cabinet; 11. First cable room; 12. Second cable room; 13. Busbar room; 14. First trolley room; 15. Second trolley room; 2. First trolley device; 21. Mobile trolley assembly; 22. Vacuum contactor; 3. Second trolley device; 4. Supporting and moving device; 41. Supporting side plate; 42. First supporting mechanism; 43. Second supporting mechanism; 44. Articulated folding connecting rod mechanism; 421. Supporting plate body; 422. Handcart slide rail; 423. Moving roller; 441. Horizontal supporting rod; 442. First vertical supporting rod; 443. Second vertical supporting rod; 444. Elastic connecting assembly; 445. Support rod locking assembly; 446. Limiting convex edge; 447. Limiting plug-in hole; 4211. Guide block storage groove; 4212. Guide tilting slider; 5. Cabinet partition device; 6. Guide locking device; 61. Guide rail; 62. Horizontal sliding mechanism; 63. Limit locking mechanism; 64. Unlocking mechanism; 611. Convex guide slide groove; 621. Limit locking slot; 622. Sliding unlocking slope; 623. Unlocking hole; 631. Plug-in limit seat; 632. Limit plug-in rod; 633. Locking elastic component; 634. Inclined sliding slope; 641. Unlocking rod; 642. Unlocking return spring; 643. Locking plug-in slot; 644. Unlocking inclined slope; 645. Vertical limit side wall. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1 to 6 This application is described in further detail.

[0033] The present application embodiment discloses a double-layer switch cabinet and a method of using the same. Figure 1 A double-layer switch cabinet comprises a cabinet 1, a first trolley device 2 movably inserted in the cabinet 1, a second trolley device 3 movably inserted in the cabinet 1 and located above the first trolley device 2, a supporting and moving device 4 for supporting the first trolley device 2 and the second trolley device 3 respectively, a cabinet partition device 5 inserted in the cabinet 1, and a guide lock device 6 provided between the cabinet 1 and the supporting and moving device 4 and used to connect the cabinet 1 and the supporting and moving device 4; the supporting and moving device 4 is used to move along the direction of inserting or withdrawing the cabinet 1; The cabinet 1 is provided with a first cable chamber 11 located at the bottom of one side of the cabinet partition device 5, a second cable chamber 12 located above the first cable chamber 11, a busbar chamber 13 located above the second cable chamber 12, a first trolley chamber 14 located at the bottom of the other side of the cabinet partition device 5 and used for inserting the first trolley device 2, and a second trolley chamber 15 located above the first trolley chamber 14 and used for inserting the second trolley device 3; The supporting and moving device 4 includes a supporting side panel 41 movably inserted in the first trolley chamber 14, a first supporting mechanism 42 fixedly connected to the supporting side panel 41 and used to support the first trolley device 2, a second supporting mechanism 43 movably connected to the supporting side panel 41 and used to support the second trolley device 3, and an articulated folding connecting rod mechanism 44 hinged to the supporting side panel 41 and connected to the second supporting mechanism 43; the articulated folding connecting rod mechanism 44 is used to fold and move obliquely downward in a direction away from the cabinet 1 with the hinge position with the supporting side panel 41 as the rotation axis, so that the second supporting mechanism 43 moves in a horizontal state to a position close to the first supporting mechanism 42.

[0034] The supporting side plate 41 of the supporting mobile device 4 of the present application is movably inserted into the first trolley chamber 14, and the supporting side plate 41 is fixedly connected to the first supporting mechanism 42, and the first supporting mechanism 42 is used to support the first trolley device 2; the supporting side plate 41 is movably connected to the second supporting mechanism 43, and the second supporting mechanism 43 is used to support the second trolley device 3; the lower end of the hinged folding link mechanism 44 is hinged to the supporting side plate 41, and the upper end of the hinged folding link mechanism 44 is connected to the second supporting mechanism 43, and the hinged folding link mechanism 44 is used for flipping and folding; the hinged folding link mechanism 44 uses the hinge point with the supporting side plate 41 as the rotation axis, and folds downward in the direction away from the cabinet 1, so that the second supporting mechanism 43 moves to a position close to the first supporting mechanism 42; The first support mechanism 42 of the present application can realize the insertion and extraction operations of the first trolley device 2, and the articulated folding connecting rod mechanism 44 can enable the second support mechanism 43 to drive the second trolley device 3 to move up and down in the direction away from the cabinet 1, without the need for a transfer trolley, effectively reducing the space occupied by the equipment, improving the efficiency of inspection and maintenance, and reducing the workload and safety risks of operators.

[0035] Furthermore, if Figure 2 As shown, the articulated folding link mechanism 44 includes a horizontal support rod 441 fixedly connected to the side wall of the second support mechanism 43, a first vertical support rod 442 hinged to the side wall of the support side plate 41 and the front end of the horizontal support rod 441, a second vertical support rod 443 hinged to the side wall of the support side plate 41 and the rear end of the horizontal support rod 441, and an elastic connection component 444 hinged to the side wall of the support side plate 41 and the second support mechanism 43.

[0036] One end of the first vertical support rod 442 of the present application is hinged to the side wall of the supporting side plate 41, and the other end is hinged to the front end of the horizontal support rod 441. The second vertical support rod 443 is hinged to the side wall of the supporting side plate 41 and the rear end of the horizontal support rod 441 respectively to form a connecting rod mechanism, which improves the stability of the second support mechanism 43 during movement; the elastic connection component 444 is hinged between the side wall of the supporting side plate 41 and the second support mechanism 43 respectively, providing elastic support and buffering functions to ensure that the movement between the various components during operation is more stable; The present application uses a hinged and elastic connection relationship, and the hinged folding link mechanism 44 takes the hinge point of the supporting side plate 41 as the axis to realize the up and down folding of the horizontal support rod 441. When moving in the direction away from the cabinet 1, the second support mechanism 43 will move downward in a horizontal state under the action of the elastic connection component 444 until it is close to the first support mechanism 42. The position is flush, which is convenient for simultaneous maintenance or replacement of the first trolley device 2 and the second trolley device 3, and also convenient for separate maintenance and replacement of the upper second trolley device 3 without moving the first trolley device 2; this design allows the second support mechanism 43 to be flexibly adjusted at different heights, improves the convenience and safety of operation, reduces the labor intensity of operators and reduces the risk of errors; The elastic connection component 444 is preferably a gas spring.

[0037] Furthermore, if Figure 2 As shown, the articulated folding link mechanism 44 also includes a support rod locking assembly 445 hinged at one end to the side wall of the support side panel 41, and a limiting flange 446 connected to the first vertical support rod 442; the other end of the support rod locking assembly 445 is provided with a limiting plug hole 447 for inserting the limiting flange 446.

[0038] In the present application, when the articulated folding link mechanism 44 is in the unfolded state, the support rod locking assembly 445 is rotated with the hinge position between the support rod locking assembly 445 and the side wall of the support side plate 41 as the rotation axis, so that the limiting flange 446 is inserted into the limiting plug-in hole 447 to limit the relative movement between the first vertical support rod 442 and the support side plate 41, providing a stable locking function to prevent the movement and folding of the articulated folding link mechanism 44, and ensure that the second support mechanism 43 stably supports the second trolley device 3; this design realizes the locking and unlocking of the articulated folding link mechanism 44 through the cooperation of the support rod locking assembly 445 and the limiting flange 446, further improving the stability and safety of the supporting mobile device 4, reducing manual operations, and improving work efficiency.

[0039] Specifically, Figure 3 As shown, the first support mechanism 42 and the second support mechanism 43 both include a support plate body 421 and a trolley slide rail 422 disposed on the support plate body 421; The first trolley device 2 and the second trolley device 3 both include a movable trolley assembly 21 slidably connected to the trolley rail 422 , and a vacuum contactor 22 disposed on the movable trolley assembly 21 .

[0040] The present application enables the support plate body 421 of the first trolley device 2 and the second trolley device 3 to move smoothly through the sliding connection between the mobile trolley assembly 21 and the trolley slide rail 422; a vacuum contactor 22 is provided on the mobile trolley assembly 21, and the vacuum contactor 22 is used to be inserted into the first cable chamber 11 or the second cable chamber 12 to complete the electrical connection operation; when the supporting mobile device 4 is pulled out of the cabinet 1, the first trolley device 2 and the second trolley device 3 are separated from the first cable chamber 11 and the second trolley device 3 from the second cable chamber 12 through the sliding of the mobile trolley assembly 21 on the trolley slide rail 422, so as to facilitate maintenance or replacement; the design realizes the convenient movement and positioning of the first trolley device 2 and the second trolley device 3 through the cooperation of the trolley slide rail 422 and the mobile trolley assembly 21, so that the movement of the first trolley device 2 and the second trolley device 3 is smoother, and the trolley slide rail 422 provides precise guidance to ensure that the mobile trolley assembly 21 can accurately reach the specified position, thereby improving the efficiency and safety of the maintenance operation; The vacuum contactor 22 is preferably a vacuum circuit breaker.

[0041] More specifically, if Figure 3 As shown, the support plate body 421 is provided with a guide block receiving groove 4211 which is open in a direction away from the cabinet 1, and the second support mechanism 43 also includes a guide inclined slider 4212 which is movably inserted in the guide block receiving groove 4211 and is used to be pulled out to support and guide the movement of the mobile trolley assembly 21.

[0042] In the present application, when the second supporting mechanism 43 moves to a position nearly flush with the first supporting mechanism 42, the guiding inclined sliding block 4212 is pulled out from the guiding block receiving groove 4211, and the inclined surface of the guiding inclined sliding block 4212 provides support and guidance for the mobile trolley assembly 21, ensuring that the mobile trolley assembly 21 is smoothly moved out from the second supporting mechanism 43, so as to facilitate the simultaneous maintenance or replacement of the first trolley device 2 and the second trolley device 3; when the supporting mobile device 4 is inserted into the cabinet 1, the guiding inclined sliding block 4212 is retracted into the guiding block receiving groove 4211, without affecting the normal operation of the first trolley device 2 and the second trolley device 3; this design realizes precise support and guidance for the movement of the second trolley device 3 through the cooperation of the guiding block receiving groove 4211 and the guiding inclined sliding block 4212, thereby improving the efficiency and safety of the maintenance operation, and at the same time does not affect the normal operation of the first trolley device 2 and the second trolley device 3 in the cabinet 1.

[0043] In addition, if Figure 2 As shown, the first supporting mechanism 42 further includes a moving roller 423 connected to the bottom of the supporting plate body 421 .

[0044] The mobile roller 423 of the present application is used to support and move the entire supporting mobile device 4; when the supporting mobile device 4 needs to be pulled out or inserted into the cabinet 1, the mobile roller 423 rolls on the ground and inside the cabinet 1, reducing friction and making the movement of the supporting mobile device 4 smoother and more labor-saving; the setting of the mobile roller 423 makes the positioning of the supporting mobile device 4 inside the cabinet 1 more flexible, which is convenient for maintenance work; through the setting of the mobile roller 423, the present application further improves the mobility and positioning flexibility of the supporting mobile device 4, reduces the burden of manual operation, and improves the efficiency and safety of maintenance work.

[0045] And, if Figures 3 to 5 As shown, the guide locking device 6 includes a guide rail 61 arranged on the inner wall of the cabinet 1, a horizontal sliding mechanism 62 arranged on the outer wall of the supporting side panel 41 and used to be movably inserted into the guide rail 61 in the horizontal direction, a limit locking mechanism 63 connected to the guide rail 61 and used to be movably inserted and matched with the horizontal sliding mechanism 62 in the vertical direction, and an unlocking mechanism 64 movably inserted on the horizontal sliding mechanism 62 and extending to the position of the limit locking mechanism 63; the guide rail 61 is provided with a convex guide groove 611 arranged in the horizontal direction and used for the horizontal sliding mechanism 62 to be inserted.

[0046] The guide rail 61 of the present application is arranged on the inner wall of the cabinet 1, and the guide rail 61 serves as the guiding basis for supporting the movable device 4. The convex guide groove 611 is arranged in the horizontal direction, and the convex guide groove 611 is used to insert and guide the movement of the horizontal sliding mechanism 62; the horizontal sliding mechanism 62 is located on the outer wall of the supporting side plate 41, and can move horizontally along the groove in the guide rail 61; the limit locking mechanism 63 is connected to the guide rail 61, and is movably plugged and matched with the horizontal sliding mechanism 62 in the vertical direction, playing the role of locking and limiting, ensuring that the horizontal sliding mechanism 62 remains stable after reaching the specified position; the unlocking mechanism 64 is arranged on the horizontal sliding mechanism 62, and extends to the plug-in position of the limit locking mechanism 63, and the locking state of the limit locking mechanism 63 is released by the unlocking operation, thereby allowing the horizontal sliding mechanism 62 to be pulled out; The design of the entire guide locking device 6 ensures the smooth movement of the supporting mobile device 4 in the cabinet 1, the guide slide rail 61 ensures the accuracy of horizontal movement, the limit locking mechanism 63 provides a locking function to prevent the supporting mobile device 4 from accidentally shifting or loosening during movement, and the unlocking mechanism 64 makes the operation more convenient and safe; the present application not only improves the accuracy of movement and alignment of the supporting mobile device 4, reduces the complexity of manual intervention, but also improves the safety of operation through an effective locking and unlocking mechanism, ensuring the safety of operators in high-pressure environments.

[0047] Furthermore, if Figure 4 and Figure 5 As shown, the limit locking mechanism 63 includes a plug-in limit seat 631 connected to the guide slide rail 61, a limit plug-in rod 632 arranged on the plug-in limit seat 631 and movably inserted in the guide slide rail 61 along the vertical direction, a locking elastic component 633 arranged between the limit plug-in rod 632 and the plug-in limit seat 631 and used to press the end of the limit plug-in rod 632, and an inclined sliding slope 634 arranged at the other end of the limit plug-in rod 632; the locking elastic component 633 is used to press the limit plug-in rod 632 to keep the limit plug-in rod 632 moving downward; the horizontal sliding mechanism 62 is provided with a limit locking card groove 621 which is open upward and is used for the limit plug-in rod 632 to be inserted, and a sliding unlocking slope 622 is provided in the limit locking card groove 621 and is used to slide and press with the lower end of the limit plug-in rod 632; When the horizontal sliding mechanism 62 is horizontally inserted into the convex guide groove 611, the end of the horizontal sliding mechanism 62 presses the inclined sliding slope 634, so that the limiting plug-in rod 632 moves up and compresses the locking elastic component 633; ​​when the limiting plug-in rod 632 is aligned with the limiting locking slot 621, the locking elastic component 633 resets and pushes the limiting plug-in rod 632 to insert into the limiting locking slot 621.

[0048] The plug-in limit seat 631 of the present application is fixed on the guide slide rail 61, and the limit plug rod 632 is movably inserted in the guide slide rail 61 along the vertical direction. The locking elastic component 633 is located between the plug-in limit seat 631 and the limit plug rod 632. The locking elastic component 633 is used to continuously press the limit plug rod 632 to keep the limit plug rod 632 moving downward; the other end of the limit plug rod 632 is provided with an inclined sliding slope 634. When the horizontal sliding mechanism 62 is inserted into the convex guide slide groove 611 along the horizontal direction, the end of the horizontal sliding mechanism 62 presses the inclined sliding slope 634 to move the limit plug rod 632 upward and compress the locking elastic component 633; ​​when the limit plug rod 632 is aligned with the limit locking card slot 621 on the horizontal sliding mechanism 62, the locking elastic component 633 is reset to push the limit plug rod 632 to insert into the limit locking card slot 621 to achieve locking; The limit locking mechanism 63 of the present application ensures that the limit plug rod 632 can be accurately locked and kept stable through the elastic reset of the locking elastic component 633. The present application provides a reliable locking mechanism, ensuring that the support mobile device 4 can be accurately positioned and firmly locked with the cabinet 1 during the movement process, thereby improving the safety, stability and convenience of the operation of the support mobile device 4, reducing the complexity of manual adjustment, and avoiding the risk of accidental loosening or displacement; The locking elastic component 633 is preferably a spring.

[0049] Furthermore, if Figure 5 As shown, the horizontal sliding mechanism 62 is provided with an unlocking hole 623 arranged along the length direction of the horizontal sliding mechanism 62; The unlocking mechanism 64 includes an unlocking rod 641 movably inserted in the unlocking hole 623, and an unlocking return spring 642 inserted in the unlocking hole 623 and located between the unlocking rod 641 and the horizontal sliding mechanism 62; the unlocking rod 641 is provided with a locking plug-in groove 643 which is aligned with the limit locking slot 621 and is used for inserting the lower end of the limit plug-in rod 632; the unlocking rod 641 is provided with an unlocking inclined slope 644 which is located in the locking plug-in groove 643 and is used for press-fitting with the inclined sliding slope 634, and a vertical limit side wall 645 which is press-fitted with the side wall of the limit plug-in rod 632.

[0050] The unlocking mechanism 64 of the present application is movably connected with the horizontal sliding mechanism 62 through the unlocking hole 623, and the unlocking rod 641 is inserted into the unlocking hole 623, and the unlocking rod 641 is kept stably reset by the unlocking reset spring 642; the unlocking rod 641 is provided with a locking insertion groove 643, and the locking insertion groove 643 is aligned with the limit locking slot 621 of the horizontal sliding mechanism 62, and the lower end of the limit insertion rod 632 is inserted, so as to realize the locking of the supporting mobile device 4; The unlocking rod 641 is also provided with an unlocking inclined slope 644, which cooperates with the inclined sliding slope 634 on the limiting plug rod 632. When the unlocking rod 641 is pressed in the direction close to the cabinet 1, the unlocking inclined slope 644 presses against the inclined sliding slope 634, so that the limiting plug rod 632 moves up along the inclined sliding slope 634. When the bottom end of the limiting plug rod 632 moves into the limiting locking slot 621, the supporting moving device 4 is pulled in the direction away from the cabinet 1, so that the sliding unlocking slope 622 presses against the bottom end of the limiting plug rod 632, and the limiting plug rod 632 continues to move up and is pulled out of the limiting locking slot 621 to release the lock. The vertical limiting side wall 645 on the unlocking rod 641 cooperates with the side wall of the limiting plug rod 632 to ensure that the limiting plug rod 632 remains stable when locked and does not shift horizontally; the unlocking reset spring 642 resets the unlocking rod 641 after the operation is completed to ensure that the system returns to the initial state; this design ensures that the locking and unlocking process of the supporting mobile device 4 is safe and stable when moving, and can effectively prevent accidental displacement. At the same time, the precise cooperation of the unlocking mechanism 64 simplifies the operation steps and improves the operation efficiency and safety of the equipment; The unlock return spring 642 is preferably a spring.

[0051] Specifically, Figure 6 As shown, a method for using a double-layer switch cabinet includes a double-layer switch cabinet and the following steps: S1: When assembling the first trolley device 2 and the second trolley device 3, the first support mechanism 42 and the second support mechanism 43 are kept parallel, and the second support mechanism 43 is pushed in the horizontal direction, so that the hinged folding link mechanism 44 is folded and moved obliquely downward in the direction away from the cabinet body 1 with the hinged position of the support side plate 41 as the rotation axis, so that the second support mechanism 43 is synchronously moved in the horizontal and vertical directions in a horizontal state to a position close to the first support mechanism 42; S2: moving the second trolley device 3 onto the second supporting mechanism 43; S3: Push the second support mechanism 43 upward to unfold the hinged folding link mechanism 44 and move the second support mechanism 43 to the top of the first support mechanism 42; S4: moving the first trolley device 2 onto the first supporting mechanism 42; S5: Push the supporting and moving device 4 into the cabinet 1, so that the first handcart device 2 is inserted into the first handcart chamber 14, and the second handcart device 3 is inserted into the second handcart chamber 15; S6: The guide locking device 6 fixes the relative position between the supporting moving device 4 and the cabinet 1; S7: When disassembling and assembling the first trolley device 2 and the second trolley device 3, the guide lock device 6 is unlocked, and the supporting and moving device 4 is pulled out from the cabinet 1; S8: Remove the first trolley device 2 from the first support mechanism 42, push the second support mechanism 43 in the horizontal direction, so that the hinged folding link mechanism 44 is folded and moved obliquely downward in the direction away from the cabinet 1 with the hinge position of the support side panel 41 as the rotation axis, so that the second support mechanism 43 is moved synchronously in the horizontal and vertical directions in a horizontal state to a position close to the first support mechanism 42; remove the second trolley device 3 from the second support mechanism 43.

[0052] In step S1 of the present application, the hinged position of the hinged folding link mechanism 44 and the supporting side plate 41 is used as the rotation axis to push the second support mechanism 43 to be folded obliquely downward, so that the second support mechanism 43 is almost flush with the first support mechanism 42, and preparations are made for the installation of the second handcart device 3; then in S2, the second handcart device 3 is moved onto the second support mechanism 43, and in S3, the second support mechanism 43 is pushed upward to unfold the hinged folding link mechanism 44, and the second support mechanism 43 is moved up to the top of the first support mechanism 42; in S4, the first handcart device 2 is moved onto the first support mechanism 42, and the first handcart device 2 is completed. and the installation of the second trolley device 3; in S5, the supporting and moving device 4 is pushed into the cabinet 1, so that the first trolley device 2 is inserted into the first trolley chamber 14, and the second trolley device 3 is inserted into the second trolley chamber 15, and the relative position between the supporting and moving device 4 and the cabinet 1 is fixed by the guide lock device 6 in S6; in the disassembly step S7, after unlocking the guide lock device 6, the supporting and moving device 4 is pulled out from the cabinet 1, and in S8, the second supporting mechanism 43 is again aligned with the position of the first supporting mechanism 42 through the folding operation of the hinged folding link mechanism 44, so that the first trolley device 2 and the second trolley device 3 are smoothly moved out; The entire operation is carried out through the flexible folding and unfolding of the articulated folding link mechanism 44 and the stable locking and unlocking of the supporting mobile device 4 by the guide locking device 6, so that the installation and disassembly of the first cart device 2 and the second cart device 3 become efficient and safe, which reduces the burden on the operator, improves the working efficiency, and reduces safety hazards.

[0053] The implementation principle of a double-layer switch cabinet and its use method in the embodiment of the present application is: A double-layer switch cabinet, wherein a supporting side plate 41 supporting a movable device 4 is movably inserted into a first handcart chamber 14, the supporting side plate 41 is fixedly connected to a first supporting mechanism 42, and the first supporting mechanism 42 is used to support a first handcart device 2; the supporting side plate 41 is movably connected to a second supporting mechanism 43, and the second supporting mechanism 43 is used to support a second handcart device 3; the lower end of a hinged folding link mechanism 44 is hinged to the supporting side plate 41, and the upper end of the hinged folding link mechanism 44 is connected to the second supporting mechanism 43, and the hinged folding link mechanism 44 is used for flipping and folding; the hinged folding link mechanism 44 uses the hinge point with the supporting side plate 41 as a rotation axis, and folds downward in a direction away from the cabinet body 1, so that the second supporting mechanism 43 moves to a position close to being flush with the first supporting mechanism 42; The first support mechanism 42 of the present application can realize the insertion and extraction operation of the first trolley device 2, and the hinged folding connecting rod mechanism 44 can enable the second support mechanism 43 to drive the second trolley device 3 to move up and down in a direction away from the cabinet 1, without the need for a transfer trolley, effectively reducing the space occupied by the equipment, improving the efficiency of inspection and maintenance, and reducing the workload and safety risks of operators; A double-layer switch cabinet, wherein an unlocking mechanism 64 and a horizontal sliding mechanism 62 are movably plugged and connected through an unlocking hole 623, an unlocking rod 641 is inserted into the unlocking hole 623, and the unlocking rod 641 is stably reset by an unlocking reset spring 642; a locking plug-in groove 643 is provided on the unlocking rod 641, and the locking plug-in groove 643 is aligned with the limit locking card groove 621 of the horizontal sliding mechanism 62, and the lower end of the limit plug-in rod 632 is inserted, so as to realize the locking of the supporting moving device 4; The unlocking rod 641 is also provided with an unlocking inclined slope 644, which cooperates with the inclined sliding slope 634 on the limiting plug rod 632. When the unlocking rod 641 is pressed in the direction close to the cabinet 1, the unlocking inclined slope 644 presses against the inclined sliding slope 634, so that the limiting plug rod 632 moves up along the inclined sliding slope 634. When the bottom end of the limiting plug rod 632 moves into the limiting locking slot 621, the supporting moving device 4 is pulled in the direction away from the cabinet 1, so that the sliding unlocking slope 622 presses against the bottom end of the limiting plug rod 632, and the limiting plug rod 632 continues to move up and is pulled out of the limiting locking slot 621 to release the lock. The vertical limiting side wall 645 on the unlocking rod 641 cooperates with the side wall of the limiting plug rod 632 to ensure that the limiting plug rod 632 remains stable when locked and does not shift horizontally; the unlocking reset spring 642 resets the unlocking rod 641 after the operation is completed to ensure that the system returns to the initial state; this design ensures that the locking and unlocking process of the supporting mobile device 4 is safe and stable when moving, and can effectively prevent accidental displacement. At the same time, the precise cooperation of the unlocking mechanism 64 simplifies the operation steps and improves the operation efficiency and safety of the equipment; A method for using a double-layer switch cabinet, in step S1, with the hinged position of the hinged folding link mechanism 44 and the supporting side plate 41 as the rotation axis, the second support mechanism 43 is pushed to be folded obliquely downward, so that the second support mechanism 43 and the first support mechanism 42 are close to each other, and preparations are made for the installation of the second handcart device 3; then in S2, the second handcart device 3 is moved onto the second support mechanism 43, and in S3, the second support mechanism 43 is pushed upward to unfold the hinged folding link mechanism 44, and the second support mechanism 43 is moved up to the top of the first support mechanism 42; in S4, the first handcart device 2 is moved onto the first support mechanism 42, and the first handcart device 2 is completed. Installation of the trolley device 2 and the second trolley device 3; in S5, the supporting and moving device 4 is pushed into the cabinet 1, so that the first trolley device 2 is inserted into the first trolley chamber 14 and the second trolley device 3 is inserted into the second trolley chamber 15, and the relative position between the supporting and moving device 4 and the cabinet 1 is fixed by the guide lock device 6 in S6; in the disassembly step S7, after unlocking the guide lock device 6, the supporting and moving device 4 is pulled out of the cabinet 1, and in S8, the second supporting mechanism 43 is again aligned with the position of the first supporting mechanism 42 through the folding operation of the hinged folding link mechanism 44, so that the first trolley device 2 and the second trolley device 3 are smoothly moved out; The entire operation is carried out through the flexible folding and unfolding of the articulated folding link mechanism 44 and the stable locking and unlocking of the supporting mobile device 4 by the guide locking device 6, so that the installation and disassembly of the first cart device 2 and the second cart device 3 become efficient and safe, which reduces the burden on the operator, improves the working efficiency, and reduces safety hazards.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-layer switch cabinet, characterized in that: The cabinet comprises a cabinet (1), a first trolley device (2) movably inserted in the cabinet (1), a second trolley device (3) movably inserted in the cabinet (1) and located above the first trolley device (2), a supporting and moving device (4) for supporting the first trolley device (2) and the second trolley device (3) respectively, a cabinet partition device (5) inserted in the cabinet (1), and a guide lock device (6) provided between the cabinet (1) and the supporting and moving device (4) and used to connect the cabinet (1) and the supporting and moving device (4); the supporting and moving device (4) is used to move in the direction of inserting or withdrawing the cabinet (1); The cabinet (1) is provided with a first cable chamber (11) located at the bottom of one side of the cabinet partition device (5), a second cable chamber (12) located above the first cable chamber (11), a busbar chamber (13) located above the second cable chamber (12), a first trolley chamber (14) located at the bottom of the other side of the cabinet partition device (5) and used for inserting the first trolley device (2), and a second trolley chamber (15) located above the first trolley chamber (14) and used for inserting the second trolley device (3); The supporting and moving device (4) comprises a supporting side plate (41) movably inserted into the first trolley chamber (14), a first supporting mechanism (42) fixedly connected to the supporting side plate (41) and used to support the first trolley device (2), a second supporting mechanism (43) movably connected to the supporting side plate (41) and used to support the second trolley device (3), and an articulated folding connecting rod mechanism (44) hinged to the supporting side plate (41) and connected to the second supporting mechanism (43); the articulated folding connecting rod mechanism (44) is used to fold and move obliquely downward in a direction away from the cabinet (1) with the hinge position with the supporting side plate (41) as the rotation axis, so that the second supporting mechanism (43) moves in a horizontal state to a position close to being flush with the first supporting mechanism (42).

2. A double-layer switch cabinet according to claim 1, characterized in that: The hinged folding connecting rod mechanism (44) includes a horizontal support rod (441) fixedly connected to the side wall of the second support mechanism (43), a first vertical support rod (442) hinged to the side wall of the support side plate (41) and the front end of the horizontal support rod (441), a second vertical support rod (443) hinged to the side wall of the support side plate (41) and the rear end of the horizontal support rod (441), and an elastic connection component (444) hinged to the side wall of the support side plate (41) and the second support mechanism (43).

3. A double-layer switch cabinet according to claim 2, characterized in that: The hinged folding connecting rod mechanism (44) also includes a support rod locking assembly (445) hinged at one end to the side wall of the supporting side plate (41), and a limiting flange (446) connected to the first vertical support rod (442); the other end of the support rod locking assembly (445) is provided with a limiting plug hole (447) for inserting the limiting flange (446).

4. A double-layer switch cabinet according to claim 1, characterized in that: The first supporting mechanism (42) and the second supporting mechanism (43) both comprise a supporting plate body (421) and a trolley slide rail (422) arranged on the supporting plate body (421); The first trolley device (2) and the second trolley device (3) both comprise a movable trolley assembly (21) slidably connected to the trolley slide rail (422), and a vacuum contactor (22) provided on the movable trolley assembly (21).

5. A double-layer switch cabinet according to claim 4, characterized in that: The support plate body (421) is provided with a guide block receiving groove (4211) which is open in a direction away from the cabinet (1), and the second support mechanism (43) also includes a guide inclined sliding block (4212) which is movably inserted into the guide block receiving groove (4211) and is used to be pulled out to support and guide the movement of the movable trolley assembly (21).

6. A double-layer switch cabinet according to claim 4, characterized in that: The first supporting mechanism (42) further comprises a movable roller (423) connected to the bottom of the supporting plate body (421).

7. A double-layer switch cabinet according to claim 1, characterized in that: The guide lock device (6) comprises a guide rail (61) arranged on the inner wall of the cabinet (1), a horizontal sliding mechanism (62) arranged on the outer wall of the supporting side plate (41) and used to be movably inserted into the guide rail (61) in the horizontal direction, a limit locking mechanism (63) connected to the guide rail (61) and used to be movably inserted into the horizontal sliding mechanism (62) in the vertical direction, and an unlocking mechanism (64) movably inserted on the horizontal sliding mechanism (62) and extending to the position of the limit locking mechanism (63); the guide rail (61) is provided with a convex guide groove (611) arranged in the horizontal direction and used for the horizontal sliding mechanism (62) to be inserted.

8. A double-layer switch cabinet according to claim 7, characterized in that: The limit locking mechanism (63) comprises a plug-in limit seat (631) connected to the guide rail (61), a limit plug-in rod (632) arranged on the plug-in limit seat (631) and movably inserted into the guide rail (61) along the vertical direction, a locking elastic component (633) arranged between the limit plug-in rod (632) and the plug-in limit seat (631) and used to press the end of the limit plug-in rod (632), and a tilting elastic component (633) arranged at the other end of the limit plug-in rod (632). The locking elastic component (633) is used to press the limit plug rod (632) so that the limit plug rod (632) maintains a downward movement trend; the horizontal sliding mechanism (62) is provided with a limit locking slot (621) which is upwardly open and is used for the limit plug rod (632) to be inserted, and a sliding unlocking slope (622) is provided in the limit locking slot (621) for sliding and pressing with the lower end of the limit plug rod (632); When the horizontal sliding mechanism (62) is horizontally inserted into the convex guide groove (611), the end of the horizontal sliding mechanism (62) presses against the inclined sliding slope (634), so that the limit plug rod (632) moves upward and compresses the locking elastic component (633); when the limit plug rod (632) is aligned with the limit locking groove (621), the locking elastic component (633) is reset and pushes the limit plug rod (632) to be inserted into the limit locking groove (621).

9. A double-layer switch cabinet according to claim 8, characterized in that: The horizontal sliding mechanism (62) is provided with an unlocking hole (623) arranged along the length direction of the horizontal sliding mechanism (62); The unlocking mechanism (64) comprises an unlocking rod (641) movably inserted into the unlocking hole (623), and an unlocking return spring (642) inserted into the unlocking hole (623) and located between the unlocking rod (641) and the horizontal sliding mechanism (62); the unlocking rod (641) is provided with a locking plug-in groove (643) aligned with the limit locking groove (621) and used for inserting the lower end of the limit plug-in rod (632); the unlocking rod (641) is provided with an unlocking inclined slope (644) located in the locking plug-in groove (643) and used for press-fitting with the inclined sliding slope (634), and a vertical limit side wall (645) press-fitting with the side wall of the limit plug-in rod (632).

10. A method for using a double-layer switch cabinet, characterized in that: A double-layer switch cabinet comprising any one of claims 1 to 9, further comprising the following steps: S1: When assembling the first trolley device (2) and the second trolley device (3), the first support mechanism (42) and the second support mechanism (43) are kept parallel, and the second support mechanism (43) is pushed in the horizontal direction, so that the hinged folding link mechanism (44) is folded and moved obliquely downward in a direction away from the cabinet body (1) with the hinged position with the support side plate (41) as the rotation axis, so that the second support mechanism (43) is synchronously moved in the horizontal and vertical directions in a horizontal state to a position close to being flush with the first support mechanism (42); S2: moving the second trolley device (3) onto the second supporting mechanism (43); S3: pushing the second supporting mechanism (43) upwards to unfold the hinged folding link mechanism (44) and move the second supporting mechanism (43) to be directly above the first supporting mechanism (42); S4: moving the first trolley device (2) onto the first supporting mechanism (42); S5: Pushing the supporting and moving device (4) into the cabinet (1) so that the first trolley device (2) is inserted into the first trolley chamber (14), and the second trolley device (3) is inserted into the second trolley chamber (15); S6: the guide locking device (6) fixes the relative position between the supporting moving device (4) and the cabinet (1); S7: When disassembling and assembling the first trolley device (2) and the second trolley device (3), the guide locking device (6) is unlocked, and the supporting and moving device (4) is pulled out from the cabinet (1); S8: Remove the first trolley device (2) from the first support mechanism (42), push the second support mechanism (43) in the horizontal direction, so that the hinged folding link mechanism (44) is folded and moved obliquely downward in a direction away from the cabinet body (1) with the hinge position with the support side panel (41) as the rotation axis, so that the second support mechanism (43) is moved synchronously in the horizontal and vertical directions in a horizontal state to a position nearly flush with the first support mechanism (42); remove the second trolley device (3) from the second support mechanism (43).

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